True Nature of a Rays of Light KRS Murthy

True Nature of a Rays of Light

KRS Murthy

I will explain the true nature of light in this document. I will start by a quiz like introduction to tease and titilate your mind. I will also give you the answer for each simple quiz.

1. Quiz: When you see a white light why is the color white? What is the true nature of the light you are seeing?
   Answer and Explanation: The true nature of light is an electromagnetic pulsations traveling in the direction of the light ray. The rays do not really have any color; they are just electromagnetic in pulsations traveling very fast slightly lower in speed than the light propogation in free space, which is a space that offers no encumberance to the light propogation.
   Sensation of the white light is a combined perception of the different wavelengths when all are present in given respective proportions.
2. Quiz: Why do we see the color of light as white or other VIBGYOR colors?
   Answer and Explanation: The color is the experience in the brain, true for humans and all animals, though the animals have limited power to distinguish the colors of light and the white compared to humans. The lens in the human eye, the different receptors for different wavelengths of light plus the brain provide the sensations of the different colors corresponding to the wavelengths and the combined effect of a white light. Truly, the color and light perceptions as we have is exclusively human sight mechanism. As such the colors we perceive and have named them are simply electromgnetic pulsations of light of different wavelengths.
3. Quiz: What are the rays of light carrying or propogating?
   Answers and Explanations:
   1. Scenario 1: Successive rays of light continuously following and racing behind one another may have different and changing wavelengths. If one pulsation has a given energy, with corresponding wavelength and frequency, the successive pulsations following behind may not have the same energy, wavelength and frequency. The successive pulsations in a given period may over all contain the different wavelengths, and may be proportionately spread to give the perception of white light. Human eye and the brain have a total delay in perceiving the combined effect of the electromagnetic pulsations. The delay amounts to many pulsations incident on the eye per second. In addition, our eye can not perceive a singly ray of light, but combined perception of many rays paassing through our eyes in a unit cross section.

The rays falling in a unit cross section on any object seen by the eye is the scattered rays and not the light incident on the object. Our eye sees white light only if all wavelengths of light totally making up the equivalent of the white light in the right perseption is scattered back from the object and the scattered rays of light is further incident on our eyes.

The scattered light composition of wavelengths depends on the composition of wavelengths of the light incident on the object. As an example if only the wavelength correspending to only one or few colors are present in the light incident on the object, only those colors would be scattered and falling on our eyes. In summary, the perceived color or a combination effect of the colors is dependent on the wavelengths incident on the object and further scattered in the direction of our eye, plus the scattering characteristics of the surface of the object.

Scenario 2: Another scenario is that a ray of light carries pulsations of only one wavelength, including all the different electromagnetic pulsations following one another in the path of a given ray of light. However, in a unit cross section, many rays passing through and propagating may over all have full combination of the spectrum of light corresponding to white light.

For both scenarios 1 and 2, a single ray of light or a combination of rays of light propagating, the propagation history of each ray of light or the combination of the rays of light, starting from the light source or sources, the radiation characteristics of the light source or sources, charecteristics of the propagating medium, the charecteristics of the different particles or objects in the path affect the ray or a group of rays of light, regarding the different rays of light in the group of rays in terms of the wavelengths and the intensity of light. The intensity of light depends on the number of rays passing through a unit cross section. Thus both the wavelengths and combinations of wavelengths and also the intensity depends on light source or sources and the propagation history.